Difference between revisions of "RDing TEMPer"

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[[File:Rding temper sigrok 2.png|thumb|right|I2C/USB closeup]]
[[File:Rding temper sigrok 2.png|thumb|right|I2C/USB closeup]]


* Main chip: Unknown, yet (markings were removed)
* Main chip: [http://www.dz863.com/datasheet-827607263-TMU3101MS_Usb-Controller/ Tenx TMU3101MS] ([http://www.dz863.com/downloadpdf-cflolocfmpbs-TMU3101MS.pdf datasheet])
** The markings were removed, but we're relatively sure it's this chip, due to lsusb and pin/feature matching (see below).
* Temperature sensor: [http://www.fairchildsemi.com/pf/FM/FM75.html Fairchild FM75] ([http://www.fairchildsemi.com/ds/FM/FM75.pdf datasheet]), I2C slave address '''0x4f'''
* Temperature sensor: [http://www.fairchildsemi.com/pf/FM/FM75.html Fairchild FM75] ([http://www.fairchildsemi.com/ds/FM/FM75.pdf datasheet]), I2C slave address '''0x4f'''
* I2C EEPROM: Unknown, yet (markings were removed), I2C slave address '''0x50'''
* I2C EEPROM: Unknown, yet (markings were removed), I2C slave address '''0x50'''

Revision as of 00:25, 26 June 2012

RDing TEMPer

The RDing TEMPer is a USB-based temperature logger.

See RDing TEMPer/Info for more details (such as lsusb -vvv output) about the device.

Hardware

I2C, USB, LED
I2C/USB closeup
  • Main chip: Tenx TMU3101MS (datasheet)
    • The markings were removed, but we're relatively sure it's this chip, due to lsusb and pin/feature matching (see below).
  • Temperature sensor: Fairchild FM75 (datasheet), I2C slave address 0x4f
  • I2C EEPROM: Unknown, yet (markings were removed), I2C slave address 0x50
  • Oscillator: 6MHz

Main chip pinout:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
SCL SDA 5V/high 5V/high 5V/high 5V/high GND 5V/high 3.3V Oscillator Oscillator 5V/high USB D- USB D+ LED (5V) 5V 3.3V 3.3V

I2C EEPROM pinout:

1 2 3 4 5 6 7 8
GND GND GND GND SDA SCL GND 3.3V

See these example sigrok captures for the I2C, USB, and LED traffic going on while the device is queried from the PC (see also screenshots on the right-hand side).

Example usage: 

$ sigrok-cli -i rding_temper_i2c_usb_led_sensor_5s.sr -a i2c:sda=0:scl=1
i2c: "START" 
i2c: "ADDRESS READ" "0x4f" 
i2c: "ACK" 
i2c: "DATA READ" "0x1d" 
i2c: "ACK" 
i2c: "DATA READ" "0x80" 
i2c: "ACK" 
i2c: "STOP" 

$ sigrok-cli -i rding_temper_i2c_usb_led_sensor_5s.sr -a usb:dm=3:dp=4:signalling=low-speed
usb: "SYNC INVALID!" "001001001100100" 
usb: "SYNC INVALID!" "000000000000110000000111111100100000000010001" 
usb: "SYNC INVALID!" "0000000000011100000011000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000111111001000101111" 
usb: "SYNC INVALID!" "000000000000001001000010011" 
usb: "OUT DEV 47 EP 0" "00000001100001111111010000001001" 
usb: "DATA1 00 00 00 00 00 00 00 00 " "000000011101001000000000000000000000000000000000000000000000000000000000000000001111110100101111" 
usb: "SYNC INVALID!" "00000000101001011" 
usb: "OUT DEV 47 EP 0" "00000001100001111111010000001001" 
usb: "DATA0 00 00 00 00 00 00 00 00 " "000000011100001100000000000000000000000000000000000000000000000000000000000000001111110100101111" 
usb: "SYNC INVALID!" "00000000101001011" 
usb: "IN DEV 47 EP 0" "00000001100101101111010000001001" 
usb: "DATA1 " "00000001110100100000000000000000" 
usb: "ACK " "0000000101001011"

Photos

  • Device, front

  • Device, back

  • Device, USB

  • Device, opened

  • PCB, front

  • PCB, back

  • Sensor, EEPROM

  • Random pads on the side

  • Main chip, microscope

  • Sensor, microscope

Protocol

HID-based.

Resources

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